Fans of the gear display on the old Flight Deck will be happy to see this feature available again albeit in a much higher-tech format. The battery level display will also add a big dose of peace of mind. The unit comes with elastic straps and is generally located on the inside of the lower right seat stay near the rear derailleur. You will likely need another 150mm E-tube wire for the install.
38mm x 25mm x 12.5mm
Shimano SKU ISMEWW011
Compatible with Dura-Ace 9070, Ultegra 6870 Di2 and Ultegra 6770